Worst thing is I don't know what I did wrong, or even what happened. I think it was a spoke snapping that took out the derailleur, but it could have been derailleur just breaking and then taking the spoke out...
In either case who knows why. Divine retribution for something maybe
If the RD wasn't adjusted right or had been knocked so it went out of adjustment it could've taken out the spoke. Normal use shouldn't have an RD in the back wheel, obvs.
I've got a nice little shopping bag full of dead or half dead Di2 parts. Most of them killed by drivers. #nowonderimlookingatoffroad
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